The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 1986
Filed:
Jun. 28, 1985
Applicant:
Inventor:
Chih-Chung Wang, Lexington, MA (US);
Assignee:
Duracell Inc., Bethel, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429218 ; 296231 ; 204292 ; 429220 ; 429221 ; 429222 ; 429223 ; 429224 ; 429225 ; 429226 ; 429230 ;
Abstract
Gassing is significantly reduced in electrochemical cells having anodes of polycrystalline metals, such as zinc, by heat treatment of the anode metal at a temperature below that of the melting point of the metal for a period of time sufficient to reduce the number of grains in the polycrystalline metal to at least a third of the original number of grains and thereafter using the metal in the formation of the cell anode. With such gassing reduction, the amount of mercury required for amalgamation with the zinc may also be reduced.